ge deep-sea fuel technology. a 50,000-pound, ingeniously wired machine that optimizes raw data to help safely discover and maximize resources in extreme conditions. our current situation seems rather extreme. why can't we maximize our... ready. ♪ brilliant. let's get out of here. warp speed. ♪ >>> what a story. we're back, of course with this one. in the days following the death of nelson mandela, some conservatives have trotted out old smears against the former south african leader. now two of the republicans' biggest rabble-rousers have found themselves the biggest targets for publicly praising mandela. gingrich paid tribute on facebook saying quote, president nelson mandela was one of the greatest leaders of our life time. his thoughtful, disciplined but friendly personality made him a leader who could define the right policies and behaviors. nelson mandela was truly the father of an integrated, democratic south africa. he got scathing responses. here's what he told cnn's candy crowley about it. >> i was v